<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        // let obj = {
        //     umane: '吴双烨',
        //     age: 18,
        //     sex: '男'
        // }
        // for (let k in obj) {
        //     console.log(k);//打印属性名
        //     console.log(obj[k]);//打印属性值 
        // }

        let students = [
            {name: '小明', age: 18, gender: '男', hometown: '河北省'},
            {name: '小红', age: 19, gender: '女', hometown: '河南省'},
            {name: '小刚', age: 17, gender: '男', hometown: ' 山西省'},
            {name: '小丽', age: 18, gender: '女', hometown: ' 山东省'}]
        for (let i = 0; i < students.length; i++) {
            let obj = students[i];
        for (let k in obj) {
             document.write(k + ':' + obj[k] + '<br>');
            }
            document.write('<hr>')
        }
    </script>
</body>

</html>